External envelope structure of green fabricated building

Abstract

The invention discloses an outer enclosure structure of a green fabricated building, and relates to the field of building outer enclosures, the outer enclosure structure comprises a base and a stand column fixedly mounted at the top of the base, fence assemblies are arranged on the two sides of the stand column, limiting grooves are symmetrically formed in the two ends of each fence assembly, and a positioning device comprises a limiting mechanism, a locking mechanism and a driving mechanism. The driving mechanism drives the locking mechanism to move in the transverse direction. According to the outer enclosure structure of the green fabricated building, the two steel ropes are clamped through the first pressing assembly and the second pressing assembly, the first pressing assembly and the second pressing assembly drive the steel ropes to move after clamping the steel ropes, and the T-shaped blocks are matched with the limiting grooves to enable the fence assembly and the stand columns to be tightly attached, so that when the fence assembly and the stand columns are assembled, the fence assembly and the stand columns are not prone to falling off. The fence assembly is faster and more convenient, the installation efficiency is higher, the situation that when the fence assembly is subjected to large impact force, the fence assembly brings down the stand columns, consequently, an enclosure is collapsed in a piece is effectively avoided, and damage to the enclosure is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to building envelope technology, in particular to a kind of green prefabricated building's envelope structure. BACKGROUND

[0002] The envelope structure refers to the envelope of building and room, divided into transparent and opaque two types, opaque envelope structure has wall, roof, floor, ceiling etc., transparent envelope structure has window, skylight, balcony door, glass partition etc., outer envelope structure refers to the envelope structure set in the building periphery, plays the role of envelope to building, the envelope structure of prior art is mostly fixed by bolt or welding when being used in practice, when the fence is subjected to larger impact force from outside, it is easy to cause the outer envelope to collapse.

[0003] According to the current market research, the envelope structure of the building is mostly set by positioning mechanism, wherein the fixed plate limits the left and right second flaps on the left and right sides of the first flap, so that the mounting plate on the left and right sides of the fixed plate can be limited, the first flap and the second flap are made of ductile plastic material, when the rectangular plate is subjected to strong extrusion or impact, the bearing force exceeds the bearing force of the first flap and the second flap, at this time, the first flap or the second flap will break, when one mounting plate falls down, it will not affect other fence mechanisms, but its first flap and second flap are disposable consumables, and the envelope structure subjected to strong extrusion or impact is difficult to be repaired and used again. SUMMARY

[0004] The purpose of the present application is to provide a kind of green prefabricated building's envelope structure to solve the above-mentioned deficiencies in the prior art.

[0005] In order to achieve the above-mentioned purpose, the present application provides the following technical scheme: a kind of green prefabricated building's envelope structure, including base and fixed installation on the top of base's stand, the stand is equipped with fence assembly on both sides, the fence assembly is symmetrically provided with limiting slot at both ends, the positioning device includes limiting mechanism and locking mechanism and drive mechanism, the drive mechanism drives the locking mechanism to move along the transverse direction, the limiting mechanism includes two take-up rollers, T-shaped block for being inserted into two limiting slots respectively and two steel ropes with one end of the two T-shaped blocks being fixedly connected with one side close to each other, the locking mechanism is installed in the stand, the locking mechanism includes drive assembly, compression assembly one and compression assembly two, the other end of the two steel ropes is threaded between compression assembly one and compression assembly two and wound on the two take-up rollers respectively, the drive assembly drives compression assembly one and compression assembly two to move close to each other to the end of its movement stroke, then moves synchronously to the right side.

[0006] Further, the limiting mechanism further comprises three limiting wheels rotatably connected with the inner wall of the stand, and a section of the steel rope connected with the right T-shaped block is wound around the three limiting wheels.

[0007] Further, the top end of each of the two vertical shafts is fixedly connected with a coil spring, and the other end of the coil spring is fixedly connected with the inner wall of the stand.

[0008] Further, the driving mechanism comprises a worm rotatably installed on the stand, one side of the worm is engaged with a worm wheel, the bottom of the worm wheel is fixedly connected with a shaft one, the lower end of the shaft one is slidingly connected with a toothed disc one, the top of the toothed disc one is abutted with a spring one, the upper end of the spring one is fixedly connected with a fixed plate fixedly connected with the inner wall of the stand.

[0009] Further, the lower side of the toothed disc one is engaged with a toothed disc two, the bottom of the toothed disc two is fixedly connected with a shaft two rotatably connected with the inner wall of the stand, the shaft two is externally sleeved with a gear one, one side of the gear one is engaged with a toothed plate.

[0010] Further, the driving assembly comprises a gear two rotatably connected with the end of the toothed plate, both sides of the gear two are engaged with racks, one end of one of the racks (612) is fixedly connected with a limiting frame one slidingly connected with the inner wall of the stand, the inner side of the limiting frame one is slidingly connected with a limiting frame two fixedly connected with the other rack.

[0011] Further, a resisting rod is rotatably installed on the upper side of the limiting frame one in the stand, the lower side of the resisting rod is provided with a protrusion, the top of the limiting frame one is provided with a limiting block matched with the protrusion, the top of the limiting frame two is provided with a pressing block, the limiting frame one is symmetrically provided with inclined tables on the upper side, one side of the limiting frame one is provided with a positioning block fixedly connected with the inner wall of the stand.

[0012] Further, both sides of the pressing assembly one are slidingly connected with the limiting frame one, and both sides of the pressing assembly one are fixedly connected with springs two, the upper ends of the springs two are fixedly connected with the limiting frame one.

[0013] Further, both sides of the pressing assembly two are slidingly connected with the limiting frame one, and both sides of the pressing assembly two are fixedly connected with springs three, the lower ends of the springs three are fixedly connected with the limiting frame one.

[0014] Further, the pressing assembly one and the pressing assembly two are both provided with resisting columns, and one end of each of the two resisting columns is abutted with the adjacent inclined table.

[0015] Compared with the prior art, the peripheral structure of the green assembly type building provided by the application clamps two steel ropes through the compression assembly one and the compression assembly two, and the compression assembly one and the compression assembly two clamp the steel ropes and move the steel ropes, and the T-shaped block cooperates with the limiting groove to tightly attach the fence assembly and the stand column, so that the assembly between the fence assembly and the stand column is more rapid and convenient, and the installation efficiency is higher. The limiting frame one and the limiting frame two can slide relative to each other, and when the fence assembly is subjected to a large impact force, the clamping of the steel rope is released, so that when the fence assembly is knocked down, the steel rope is stretched by the T-shaped block connected thereto, thereby avoiding that the fence assembly knocks down the stand column when subjected to a large impact force, causing the collapse of the enclosure, and reducing the damage of the enclosure. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments or the prior art, the drawings needed in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments described in the application, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0017] Figure 1 The front view partial cross-sectional structure schematic view provided by the second embodiment of the application is shown in the figure. Figure 2 The external overall structure schematic view of the application is shown in the figure. Figure 3 The bottom view partial cross-sectional structure schematic view provided by the second embodiment of the application is shown in the figure. Figure 4 The enlarged schematic view of A in the application is shown in the figure. Figure 1 Figure 5 The enlarged schematic view of B in the application is shown in the figure. Figure 1 Figure 6 The enlarged schematic view of C in the application is shown in the figure. Figure 3 Figure 7 The limiting frame one, the limiting frame two, the inclined table, the compression assembly one, the compression assembly two, the abutting column, the spring two and the spring three structure schematic view of the application is shown in the figure. Figure 8 The limiting frame one, the compression assembly one, the compression assembly two, the spring two and the spring three combined schematic view of the application is shown in the figure. Figure 9 The front view partial cross-sectional structure schematic view provided by the first embodiment of the application is shown in the figure. Figure 10 The enlarged schematic view of D in the application is shown in the figure. Figure 9 Figure 11 The bottom view partial cross-sectional structure schematic view provided by the first embodiment of the application is shown in the figure.​​​​ Figure 12 For the present invention Figure 11 Enlarged schematic view of E in the present invention.

[0018] Explanation of reference signs: 1, base; 2, stand; 3, fence assembly; 31, limiting groove; 4, positioning device; 5, limiting mechanism; 51, take-up roller; 52, T-shaped block; 53, steel rope; 54, limiting wheel; 55, vertical shaft; 56, coil spring; 6, locking mechanism; 61, drive assembly; 611, gear two; 612, rack; 613, limiting frame one; 614, limiting frame two; 615, abutting rod; 616, inclined table; 617, positioning block; 62, compression assembly one; 63, compression assembly two; 64, spring two; 65, spring three; 66, abutting column; 7, drive mechanism; 71, worm; 72, worm gear; 73, shaft one; 74, toothed disc one; 75, spring one; 76, toothed disc two; 77, shaft two; 78, gear one; 79, toothed plate. DETAILED DESCRIPTION

[0019] In order for those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the drawings.

[0020] Example one: Please refer to Figures 2-3 and Figures 6-12 , a kind of green assembly type building's outer envelope structure, including base 1 and fixedly installed on the top of base 1 stand 2, stand 2 both sides are equipped with fence assembly 3, fence assembly 3 both ends symmetrically open limiting groove 31; Two positioning devices 4, two positioning devices 4 are arranged at upper and lower ends of stand 2 respectively, positioning device 4 includes limiting mechanism 5 and locking mechanism 6 and drive mechanism 7, drive mechanism 7 drives locking mechanism 6 to move along the transverse direction, limiting mechanism 5 includes two take-up rollers 51, T-shaped block 52 for being inserted into two limiting grooves 31 respectively and two steel ropes 53 with one end fixedly connected with the side of two T-shaped blocks 52 close to each other, limiting mechanism 5 further includes three limiting wheels 54 rotationally connected with the inner wall of stand 2, a section of steel rope 53 connected with right side T-shaped block 52 is wound on three limiting wheels 54, three limiting wheels 54 guide steel rope 53 connected with right side T-shaped block 52, two take-up rollers 51 are fixedly connected with vertical shaft 55 rotationally connected with the inner wall of stand 2, two vertical shafts 55 top ends are fixedly connected with coil spring 56, coil spring 56 other end is fixedly connected with the inner wall of stand 2, coil spring 56 is used to make take-up roller 51 rotate to realize automatic tightening of steel rope 53, other types of torsional springs that can be used for winding can also be used instead; The driving mechanism 7 comprises an electric telescopic rod 8 fixedly installed at one end on the stand 2, the output end of the electric telescopic rod 8 is fixedly connected with a damping spring 9, and the damping spring 9 is fixedly installed with a vertical plate 10 at the end; The locking mechanism 6 is installed inside the stand 2, the locking mechanism 6 comprises a driving assembly 61, a pressing assembly one 62 and a pressing assembly two 63, the other ends of the two steel wires 53 are both threaded between the pressing assembly one 62 and the pressing assembly two 63 and are wound on the two take-up rollers 51 respectively, the driving assembly 61 drives the pressing assembly one 62 and the pressing assembly two 63 to move to the right side synchronously after moving to the end of the movement stroke and moving close to each other, the driving assembly 61 comprises a gear two 611 rotatably connected with the upper side of the vertical plate 10, the gear two 611 is engaged with a rack 612 on both sides, one end of one of the racks 612 is fixedly connected with a limiting frame one 613 slidingly connected with the inner wall of the stand 2, the limiting frame one 613 is slidingly connected with a limiting frame two 614 fixedly connected with the other rack 612 on the inner side, one side of the toothed plate 79 is slidingly connected with the limiting frame two 614 in the transverse direction, the stand 2 is rotatably installed with an abutting rod 615 inside the limiting frame one 613 on the upper side, the lower side of the abutting rod 615 is provided with a protruding block, the top of the limiting frame one 613 is provided with a limiting block matched with the protruding block, the top of the limiting frame two 614 is provided with a pressing block, and the limiting frame one 613 is provided with a slope table 616 symmetrically arranged on the upper side, and the limiting frame one 613 is provided with a positioning block 617 fixedly connected with the inner wall of the stand 2 on one side; The pressing assembly one 62 is slidingly connected with the limiting frame one 613 on both sides, and the pressing assembly one 62 is fixedly connected with a spring two 64 on both sides, the upper end of the spring two 64 is fixedly connected with the limiting frame one 613, the pressing assembly one 62 can be reset after moving relative to the limiting frame one 613 under the action of external force through the spring two 64, the pressing assembly two 63 is slidingly connected with the limiting frame one 613 on both sides, and the pressing assembly two 63 is fixedly connected with a spring three 65 on both sides, the lower end of the spring three 65 is fixedly connected with the limiting frame one 613, the pressing assembly two 63 can be reset after moving relative to the limiting frame one 613 under the action of external force through the spring three 65, the abutting column 66 is arranged on the pressing assembly one 62 and the pressing assembly two 63, one end of the two abutting columns 66 is respectively abutted with the adjacent slope table 616, the slope table 616 is used for moving in the transverse direction relative to the abutting column 66, the slope table 616 extrudes and pushes the abutting column 66 to move, so as to drive the pressing assembly one 62 and the pressing assembly two 63 to move close to each other, so as to clamp the steel wire 53; When the fence assembly 3 is subjected to a greater impact force, the fence assembly 3 pulls the T-shaped block 52, the T-shaped block 52 pulls the steel wire 53, the compression assembly one 62 and the compression assembly two 63 are dragged by the steel wire 53, and then the gear two 611 drives the tooth plate 79 to move to the left side, the damping spring 9 is compressed, the limiting frame one 613 and the limiting frame two 614 move to the left side, when the limiting frame two 614 moves to the left side, the positioning block 617 abuts against the limiting frame two 614, the steel wire 53 continues to move to the left side, the limiting frame one 613 and the limiting frame two 614 slide relative to each other, and at the same time, the two abutting columns 66 slide along the two inclined tables 616 under the action of the spring two 64 and the spring three 65, so that the compression assembly one 62 and the compression assembly two 63 move away from each other, the clamping of the steel wire 53 is released, and thus when the fence assembly 3 is impacted and collapses, the steel wire 53 is stretched by the T-shaped block 52 connected thereto, so that the fence assembly 3 does not bring down the stand 2 when subjected to a greater impact force.

[0021] Embodiment two: Please refer to Figures 1-8 A kind of green fabricated building's outer envelope structure, including base 1 and fixedly installed on the top of base 1 stand 2, stand 2 both sides are equipped with fence assembly 3, fence assembly 3 both ends are symmetrically provided with limiting slot 31; Two positioning devices 4, two positioning devices 4 are arranged at upper and lower ends of stand 2 respectively, positioning device 4 includes limiting mechanism 5 and locking mechanism 6 and drive mechanism 7, drive mechanism 7 drives locking mechanism 6 to move along the transverse direction, limiting mechanism 5 includes two take-up rollers 51, T-shaped block 52 for being inserted into two limiting slots 31 respectively and two steel wires 53 with one end fixedly connected with the side close to two T-shaped blocks 52 respectively, limiting mechanism 5 further includes three limiting wheels 54 rotationally connected with the inner wall of stand 2, a section of steel wire 53 connected with right T-shaped block 52 is wound on three limiting wheels 54, three limiting wheels 54 guide the steel wire 53 connected with right T-shaped block 52, two inside fixedly connected with the inner wall of stand 2 have vertical shaft 55, two vertical shafts 55 top ends are all fixedly connected with coil spring 56, coil spring 56 other end is fixedly connected with the inner wall of stand 2, coil spring 56 is used for making take-up roller 51 rotate to realize automatic tightening of steel wire 53, and other types of torsional springs that can wind can also be used to replace; The driving mechanism 7 comprises a worm 71 rotatably installed on the stand 2, one side of the worm 71 is engaged with a worm wheel 72, the bottom of the worm wheel 72 is fixedly connected with a shaft I 73, the lower end of the shaft I 73 is slidably connected with a toothed disc I 74, the top of the toothed disc I 74 abuts against a spring I 75, the upper end of the spring I 75 is fixedly connected with a fixed plate fixedly connected with the inner wall of the stand 2, the outer part of the shaft I 73 is rotatably connected with the fixed plate, the lower side of the toothed disc I 74 is engaged with a toothed disc II 76, the bottom of the toothed disc II 76 is fixedly connected with a shaft II 77 rotatably connected with the inner wall of the stand 2, the outer part of the shaft II 77 is sleeved with a gear I 78, one side of the gear I 78 is engaged with a toothed plate 79; The worm 71 is rotated, the worm 71 drives the worm wheel 72 to rotate, and then the shaft I 73 drives the toothed disc I 74 to rotate, the toothed disc I 74 drives the toothed disc II 76 to rotate, the shaft II 77 drives the gear I 78 to rotate, and then the gear I 78 drives the toothed plate 79 to move; The locking mechanism 6 is installed in the stand 2, the locking mechanism 6 comprises a driving assembly 61, a pressing assembly I 62 and a pressing assembly II 63, the other ends of the two steel wires 53 are both threaded between the pressing assembly I 62 and the pressing assembly II 63 and are wound on the two take-up rollers 51 respectively, the driving assembly 61 drives the pressing assembly I 62 and the pressing assembly II 63 to move synchronously to the right side after moving to the end of the movement stroke, the driving assembly 61 comprises a gear II 611 rotatably connected with the end of the toothed plate 79, both sides of the gear II 611 are engaged with a rack 612, one end of one of the racks 612 is fixedly connected with a limiting frame I 613 slidably connected with the inner wall of the stand 2, the inner side of the limiting frame I 613 is slidably connected with a limiting frame II 614 fixedly connected with the other rack 612, one side of the toothed plate 79 is transversely slidably connected with the limiting frame II 614, a stop rod 615 is rotatably installed on the upper side of the limiting frame I 613 in the stand 2, a protrusion is arranged on the lower side of the stop rod 615, a limiting block is arranged on the top of the limiting frame I 613 and matched with the protrusion, an extrusion block is arranged on the top of the limiting frame II 614, and inclined tables 616 are symmetrically arranged on the limiting frame I 613, a positioning block 617 fixedly connected with the inner wall of the stand 2 is arranged on one side of the limiting frame I 613; The two sides of the pressing assembly one 62 are slidably connected with the limiting frame one 613, and the two sides of the pressing assembly one 62 are fixedly connected with the spring two 64, the upper end of the spring two 64 is fixedly connected with the limiting frame one 613, and the spring two 64 can reset the pressing assembly one 62 after moving relative to the limiting frame one 613 under the action of external force, the two sides of the pressing assembly two 63 are slidably connected with the limiting frame one 613, and the two sides of the pressing assembly two 63 are fixedly connected with the spring three 65, the lower end of the spring three 65 is fixedly connected with the limiting frame one 613, and the spring three 65 can reset the pressing assembly two 63 after moving relative to the limiting frame one 613 under the action of external force, the pressing assembly one 62 and the pressing assembly two 63 are provided with the abutting column 66, one end of the two abutting columns 66 is abutted with the inclined table 616 adjacent thereto, the inclined table 616 moves transversely relative to the abutting column 66, the inclined table 616 extrudes and pushes the abutting column 66 to move, so as to drive the pressing assembly one 62 and the pressing assembly two 63 to move close to each other, so as to clamp the steel rope 53.

[0022] Working principle: in use, place the base 1 on the bottom surface, pull the two T-shaped blocks 52 and insert them into the limiting grooves 31 on the side of the fence assembly 3 close to the column 2, rotate the worm 71, the worm 71 drives the worm wheel 72 to rotate, the shaft one 73 drives the toothed disc one 74 to rotate, the toothed disc one 74 drives the toothed disc two 76 to rotate, the shaft two 77 drives the gear one 78 to rotate, the toothed plate 79 drives the gear two 611 on it to move to the right, the two racks 612 are engaged with the gear two 611 respectively, so that the two racks 612 drive the limiting frame one 613 and the limiting frame two 614 to move to the right respectively, the protrusions on the abutting rod 615 abut the limiting blocks on the limiting frame one 613, so that the limiting frame one 613 is limited, the two racks 612 move relative to each other, so that the limiting frame two 614 moves to the side of the limiting frame one 613, the inclined table 616 on the limiting frame one 613 extrudes and pushes the abutting column 66, so that the two abutting columns 66 drive the pressing assembly one 62 and the pressing assembly two 63 to move close to each other, the pressing assembly one 62 and the pressing assembly two 63 clamp the two steel ropes 53; At this time, the extrusion block on the limiting frame two 614 extrudes and pushes the abutting rod 615, the abutting rod 615 rotates and the protrusions on the lower side of the abutting rod 615 are separated from the limiting blocks, so that the toothed plate 79 continues to drive the limiting frame one 613 and the limiting frame two 614 to move to the right through the gear two 611 and the two racks 612, so as to pull the two steel ropes 53 respectively, so that the T-shaped block 52 cooperates with the limiting groove 31 to tightly fit the fence assembly 3 and the column 2, so that the assembly between the fence assembly 3 and the column 2 is more quick and convenient, and the installation efficiency is higher; When the fence assembly 3 is subjected to a greater impact force, the fence assembly 3 pulls the T-shaped block 52, the T-shaped block 52 pulls the steel cable 53, the compression assembly one 62 and the compression assembly two 63 are dragged by the steel cable 53, in turn the gear two 611 drives the toothed plate 79 to move to the left side, in turn the toothed plate 79 drives the gear one 78 to rotate, the gear one 78 drives the shaft two 77 to rotate, in turn the toothed disc two 76 rotates, the worm 71 and the worm wheel 72 self-lock, in turn the shaft one 73 cannot rotate, so that the meshing teeth on the toothed disc one 74 extrude and push the toothed disc two 76, the toothed disc two 76 extrudes the spring one 75, the toothed disc two 76 moves upwards, in turn the limiting frame one 613 and the limiting frame two 614 move to the left side, when the limiting frame two 614 moves to the left side, the positioning block 617 abuts against the limiting frame two 614, the steel cable 53 continues to move to the left side, the limiting frame one 613 and the limiting frame two 614 slide relative to each other, at the same time, the two abutting columns 66 slide along the two inclined tables 616 under the action of the spring two 64 and the spring three 65, in turn the compression assembly one 62 and the compression assembly two 63 move away from each other, the clamping of the steel cable 53 is released, in turn when the fence assembly 3 is impacted and collapses, the steel cable 53 is stretched by the T-shaped block 52 connected to the steel cable 53, so that when the fence assembly 3 is subjected to a greater impact force, the fence assembly 3 does not bring down the stand 2, the collapse of the enclosure is avoided, and the damage of the enclosure is reduced.

[0023] The foregoing merely describes some exemplary embodiments of the present application by way of illustration, and it is needless to say that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present application. Therefore, the foregoing drawings and descriptions are illustrative in nature, and should not be construed as limiting the scope of protection of the claims of the present application.

Claims

1. An external envelope structure for a green prefabricated building, comprising a base (1) and columns (2) fixedly installed on the top of the base (1), characterized in that, Both sides of the column (2) are provided with fence components (3), and the fence components (3) are symmetrically provided with limit grooves (31) at both ends; Two positioning devices (4), the positioning devices (4) include a limiting mechanism (5), a locking mechanism (6), and a driving mechanism (7). The driving mechanism (7) drives the locking mechanism (6) to move laterally. The limiting mechanism (5) includes two take-up rollers (51), T-shaped blocks (52) for inserting into two limiting grooves (31) respectively, and two steel ropes (53) with one end fixedly connected to the side close to the two T-shaped blocks (52) respectively. The locking mechanism (6) is installed inside the column (2). The locking mechanism (6) includes a drive assembly (61), a first pressing assembly (62) and a second pressing assembly (63). The other ends of the two steel ropes (53) pass through the first pressing assembly (62) and the second pressing assembly (63) and are wound on the two take-up rollers (51) respectively. The drive assembly (61) drives the first pressing assembly (62) and the second pressing assembly (63) to move closer to each other to the end of their stroke, and then move synchronously to the right.

2. The external envelope structure of a green prefabricated building according to claim 1, characterized in that, The limiting mechanism (5) also includes three limiting wheels (54) that are rotatably connected to the inner wall of the column (2). A section of the steel rope (53) connected to the right T-block (52) is wound around the three limiting wheels (54). The two take-up rollers (51) are fixedly connected to a vertical shaft (55) that is rotatably connected to the inner wall of the column (2).

3. The external envelope structure of a green prefabricated building according to claim 2, characterized in that, Both of the vertical shafts (55) are fixedly connected to the top ends of a coil spring (56), and the other end of the coil spring (56) is fixedly connected to the inner wall of the column (2).

4. The external envelope structure of a green prefabricated building according to claim 1, characterized in that, The drive mechanism (7) includes a worm gear (71) rotatably mounted on the column (2), a worm wheel (72) meshing on one side of the worm gear (71), a shaft (73) fixedly connected to the bottom of the worm wheel (72), a gear disk (74) slidably connected to the lower end of the shaft (73), a spring (75) abutting the top of the gear disk (74), and a fixing plate fixedly connected to the inner wall of the column (2) fixedly connected to the upper end of the spring (75).

5. The external envelope structure of a green prefabricated building according to claim 4, characterized in that, The first gear (74) is engaged with the second gear (76) on its lower side. The bottom of the second gear (76) is fixedly connected to the second shaft (77) which is rotatably connected to the inner wall of the column (2). The second shaft (77) is fitted with a gear (78) on its outer side. The gear (78) is engaged with a toothed plate (79) on one side.

6. The external envelope structure of a green prefabricated building according to claim 5, characterized in that, The drive assembly (61) includes a gear two (611) rotatably connected to the end of the gear plate (79). Both sides of the gear two (611) are meshed with racks (612). One end of one rack (612) is fixedly connected to a limiting frame one (613) that is slidably connected to the inner wall of the column (2). The inner side of the limiting frame one (613) is slidably connected to a limiting frame two (614) that is fixedly connected to the other rack (612).

7. The external envelope structure of a green prefabricated building according to claim 6, characterized in that, Inside the column (2), a stop rod (615) is rotatably installed on the upper side of the first limiting frame (613). A protrusion is provided on the lower side of the stop rod (615). A limiting block that cooperates with the protrusion is provided on the top of the first limiting frame (613). A pressing block is provided on the top of the second limiting frame (614). An inclined platform (616) is symmetrically provided on the first limiting frame (613). A positioning block (617) that is fixedly connected to the inner wall of the column (2) is provided on one side of the first limiting frame (613).

8. The external envelope structure of a green prefabricated building according to claim 7, characterized in that, The first pressing component (62) is slidably connected to the first limiting frame (613) on both sides, and the second spring (64) is fixedly connected to both sides of the first pressing component (62), with the upper end of the second spring (64) fixedly connected to the first limiting frame (613).

9. The external envelope structure of a green prefabricated building according to claim 7, characterized in that, The two sides of the clamping component 2 (63) are slidably connected to the limiting frame 1 (613), and the two sides of the clamping component 2 (63) are fixedly connected to the spring 3 (65), and the lower end of the spring 3 (65) is fixedly connected to the limiting frame 1 (613).

10. The external envelope structure of a green prefabricated building according to claim 9, characterized in that, Both the first clamping component (62) and the second clamping component (63) are provided with abutments (66), and one end of each abutment (66) abuts against the adjacent inclined platform (616).

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